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1081 Rational Sum (20 分) 1081 Rational Sum (20 分) 1081 Rational Sum (20 分) Given N rational numbers in the form numerator/denominator, you are suppose 阅读全文
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1084 Broken Keyboard (20 分) 1084 Broken Keyboard (20 分) 1084 Broken Keyboard (20 分) On a broken keyboard, some of the keys are worn out. So when you t 阅读全文